and \(\mathbf {b} \in \mathbb {C}^{N_\mathrm {RX}}\) .
Similar to the single measurement vector (SMV) model (REF ), the MMV-form atomic norm of \(\mathbf {H}\)  can be minimized by solving the positive semidefinite program [1]}
\(\begin{aligned}\arg \min _{\begin{array}{c}\mathbf {u} \in \mathbb {C}^{N_u} \\ \mathbf {V} \in \mathbb {C}^{N_\mathrm {RX} \times N_\mathrm {RX}}\end{array}}&\frac{1}{2}\left(\frac{1}{N} \mathrm {tr}\big (T(\mathbf {u})\big ) + \mathrm {tr}(\mathbf {V}) \right) \\&\mathrm {s.t.}\begin{bmatrix}T(\mathbf {u}) & \mathbf {H} \\\mathbf {H}^\mathrm {H} & \mathbf {V}\end{bmatrix}\succeq 0.\end{aligned}\) 
